Brake shoe



W. I... KRIEG BRAKE snow March 8 1927.

Filed July 1926 @MMWW 1 INVENTOR WALTER L. Km e.

ATTORNEY Patented Mar .1927.

WEE 71i m uez'aosc PATENT curios.

WALT ER L KBIEG, F OHICA GO, lLLmOls, ASSIGNOR TO BENDIX BRAKE COMPANY,

OF CHICAGO, ILLINOIS, A

CORPORATION OF ILLINOIS.

BRAKE SHOE.

This invention relates to brakes, and is illustrated as embodied in novel and men.- pensive shoes for an internal expanding automobile brake. An object of the invention cuate brake shoes 14, 16, and 18. Shoe 18 is'shown connected to shoe 16 by a ivot 20, which may interengage with an a justa'ble eccentric stop 22 carried by the backing is to provide for the use of a band to which plate 12. Shoe 14 is also connected to shoe 16, by, a pivot 24 havin a head 26 slidably the lining may be attached, preferably in long lengths, sections of the band and 1111- ing being attached across the faces of the shoes. I prefer to form the body of each shoe with a stiffening web made up of two flanges integrall united along their inner edges, and whic 'in one form of shoe are spread apart at the end of the shoe to form spaced arms straddling the end of an adjacent shoe, these two flanges being continned to form oppositely-extending cylindrical flanges to which the band is attached.

Other features of the invention relate to a novel Wear or cam." plate engaging the end of the stiflening web of the shoe and havin tongues bentbacli and secured to the si es of the web, and to improved means for securing the band to the body of the shoe, and to other novel combinations of parts and desirable particular constructions which will be apparent from the, following description of t e illustrative embodiments shown in the accompanying drawing, in which:

Figure 1 is a vertical section through the brake, just inside the head-of the drum,

' showing the shoes in side elevation;

Figure. 2 is a partial section 'on the, line 2-2 of Figure 1, showing the anchorage of the shoes;

Figure 3 is a section on the line 33 of Figure 1, showing the pivotal connection between two of the shoes; I

Figure 4 isan end elevation of one of the end shoes, looking in the direction of the arrows.4-4 in Fi re 1;

Fi ure -5 is a partia elevation lookin towar the outer or limng side of one '0 the shoes;

Figure 6 be section through one of the.

shoes on the line 6-6 of Figure 5;

. Figure 7 is a-view corresponding to Figi ure 6, but showing a modification.

Figure 8 is a sectionon the line 8--8 of .Figure 1, showing the overlapping of two .of the shoes. p

The articular brake illustrated in Figure 1 inclu as a rotatable drum 10, at the open "side of which i s a backing plate or the like engaging the backing p ate 12. Shoe 16 is carried by the backing plate.

The brake is applied by means such as a double cam 30, forcing shoes 14 and 18 apart against the resistance of a return spring 32, whereupon shoes 14 and 18 (especially the latter) force shoe 18 toward the drum against the resistance of an auxiliary return spring34,

The present invention relates to the construction of the shoes 14,16, and 18, or their equivalents, whether or ot used in the above-described brake. leach of the shoes includes-a body 'orti'on comprising a stiiiening web formed grally united along-their inner edges, the flanges 36' being continued at their outer edges to form oppositely-extending cylindrlcal flan cs 38.

Across th 40 carrying the rake lining 42 secured by bending over lugs 44 from the band (Figures 5 and 6), or by rivets 46 (Figure 7). Band. 40 ma besecured to the body of the shoe by ben ing parts such as lugs 48 over the side edges offlanges38. Band 40 may be prepared by securing lining 42 to it in long lengths, and then cutting off sections for single shoes.

In making the end shoes 14 and 18, which are prefera lyinterchan'geable, the flanges 36 are separated at the pivoted end of the shoe and spread apart to form spaced arms 50 straddling the end of shoe '16, the arms having openings 52 for anchor 28, and bosses .54 to which washers 56 are welded to form' bearings embracing ivots 24'and 20. Wash era 58 may be we] ed on opposite sides of shoe 16 to extend the length of bearing rfor pivots 20 and 24. By comparison of Figures 2 and 8, it will be seen that 'band 40 o eachof the end shoes 14 and 18 is "contin ed be- 50, thus bridging across said arms,

by two flanges 36" inteyond the point where flanges 36 are spread apart to form arms e flanges 38 there extends a band I ',Atthe unpivoted ends of shoes 14and 18,

cam-engaging wear plates 60 are secured in- 12, and within which are arranged fourarengagement with'the endsof the stiflening t? webs ofthe shoes; Each-wear plate 60 has integral tongues 62 bent back into an agement with the sides of the Web, and he (1 b rivets or other tastenings passing throng the ton'guesan'd through the two flanges 36'v iormingtheweb. 7 While rparticular' shoes have been: escribed dtail,"it is not my intention to limit the scope of theinvention to those oes, or otherwise than by the terms of the'app'e'ndd claims.

I. c aim: I

1, A brake shoe having a body tornied'ot two stifleningflang'es integrally united along y 15 their inner ed es-and continued in opposite directions at t eir outer edges as cylindricalf flan es,the'stiflening flanges being separated a tt eirin'ner edges for some distance from one 'end ofthe-shoe and spread 'apart'tm form spaced anchoring arms, .in combination with a band's'eeured across. the outerfaces' of said "oppositely-extending cylindrical flanges. I T 1; a. 2.;A brake shoehaving a body formed of} twostifie'nin'g flanges integrally united along their inners ed' esandcontinue'din op site directions at t ei'r outer edges as cylin rical flanges, the stiffening" flanges being separated at then inner e es for some istance from one end of the shoe and spread'apart to form s aced anchoring arms, in combination wit a band'- seeured across the outer faces oi said oppositely-extendin eylin'drical flan es and continued bayou thepoint to bridge across and, arms. 7

' tegra of sai flanges.

and secured the end' of said 'web and-havinginteglfa bent backwardly, and engaging the I tongues sides ofsaid web, and iastenings passlng through said tongues and both of said 5. An arcuate brake shoe having astifiening web comprising two flan esand oppo-.

anges res'pec 1 sitel -extendin tive y integra cylindrical with said; flanges of the stiflening web, in combination with aba-nd extending acrossthe faces of the cylindrical flang s I and 'havinglseries of ln s' bent: across the side edges oft e cylindricaflanges.

6'. An arcuate brake shoe having a stiffen-4 ingweb eoinprisin two flan es and oppositely-extending gcy' indricalf anges .respe tively 'integra' -stiffening web, incombination with 'a band extending across the flanges. and-having arts bent across the side ed es of the 'cylin rical" flan es.

n testimony whereofgl ave signed my name.- I L. KRIEG.

brake shoe having a cylindrical trioand having in- -.with said flanges of the hereunto faces of the-cylindrical. 

